Encontrados 8 documentos, a visualizar página 1 de 1
Intraoral stereoradiography visualization with virtual reality: peri-implant bo...
Costa,Jorge Ferreira da; Caramês,João; Hachmeister,DanielAbstract Objectives: The main objectives of this in vitro study were to evaluate the accuracy and precision of stereoradiography with virtual reality in measuring peri-implant bone level compared to conventional 2D radiography, and to find which stereoscopic angles between images lead to higher accuracy and precision. Another objective was to develop a virtual reality method for viewing pairs of stereoscopic ra...
White Sponge Nevus of the oral mucosa - Case report
Batalha,Beatriz; Abreu,Daniela; Moreira,André; Freitas,Filipe; Francisco,Helena; Caramês,JoãoAbstract White sponge nevus (WSN) is a rare autosomal-dominant disorder of the non-keratinized mucosa, characterized by a thickened white edematous mucosa whose surface appears irregular, wrinkly, or spongy. It affects mainly the oral mucosa. The histopathological examination demonstrates hyperparakeratosis, acanthosis with intracellular edema and vacuolization over the prickle cell layer, and eosinophilic peri...
Repetibilidade do T-scan na medição da oclusão estática - Estudo clínico
Cabrita,Joana; Alves,Rita; Casado,Sara; Ascenso,João; Caramês,João; Marques,DuarteResumo Objetivos: Avaliar a repetibilidade intra-indivíduo do registo oclusal realizado com o T-scan em dois momentos temporais. Métodos: Foram avaliados 23 voluntários com 46 medições com o T-scan (v.9) por um operador calibrado, com um intervalo de tempo de sete dias. Avaliaram-se os valores em intercuspidação e força máxima total e por dente, em cada indivíduo. A repetibilidade do aparelho foi determinada at...
Influence of abutment and connection type on implant-abutment connection rigidi...
Mendes,Teresa Almeida; Vilhena,Luís Miguel; Portugal,Jaime; Caramês,João; Ramalho,Amílcar Lopes; Lopes,Luís PiresAbstract Objectives: To evaluate the effects of the abutment material and the connection type on the implant-abutment connection rigidity. Methods: The study evaluated eighteen implants with three different types of connections: external-hexagon, tri-channel, and conical connection. Half of the implants were connected to titanium abutments, and the other half to zirconia abutments, forming six study groups (n=3...
Cancro oral: conhecimentos, práticas e atitudes dos médicos dentistas e dos hig...
Pinto,Carolina; Freitas,Filipe; Francisco,Helena; Marques,João Aquino; Caramês,JoãoResumo Objetivos: Avaliar os conhecimentos, práticas e atitudes dos médicos dentistas e higienistas orais relativamente ao cancro oral em Portugal. Métodos: Os dados foram recolhidos entre janeiro e março de 2021, através de questionários online, cujo preenchimento foi voluntário e confidencial. Aplicou-se estatística descritiva recorrendo ao IBM SPSS Satistics® 26. Resultados: Consideraram-se 272 respostas vál...
Comparison of geometric design, metallurgical features and mechanical behavior ...
Martins,Jorge N.R.; Silva,Emmanuel J.N.L.; Marques,Duarte; Arantes-Oliveira,Sofia; Caramês,João; Versiani,Marco AurélioAbstract Objectives: To assess the characteristics, performance, and safety of ProTaper Gold SX (PTG SX) replica-like instruments. Methods: A multimethod research involving the assessment of geometric design (macro and through scanning electron microscope), Ti/Ni proportions (energy-dispersive X-ray spectroscopy), phase transformation temperatures (differential scanning calorimetry), torsional resistance, and f...
Influence of implant design, length, diameter, and anatomic region on implant s...
Moreira,André; Rosa,José; Freitas,Filipe; Francisco,Helena; Luís,Henrique; Caramês,JoãoAbstract Objectives: To evaluate the influence of implant geometry and anatomical region on implant stability. Methods: A randomized controlled clinical trial was conducted on 45 patients, in whom a total of 79 implants were placed: 40 MIS C1 Implants and 39 MIS Seven Implants. The implant stability quotient was measured using resonance frequency analysis immediately after implant placement and 8 weeks later wi...
Effect of contingent electrical stimulation in sleep bruxism - a randomized cli...
Quaresma,Maria Carlos; Crispim,Pedro; Luis,Henrique; Marques,Duarte; Caramês,JoãoABSTRACT Objectives: A randomized clinical trial comparing the effects of a 4- and 8-week consecutive use of contingent electrical stimulation on self-reported pain, jaw muscle activity, and threshold intensity in teeth grinding during sleep, over 6 months. Methods: This randomized clinical trial studied 48 patients diagnosed with bruxism and masticatory myofascial pain according to established methods. Patient...